单选题 Thomas Alva Edison lit up the world with his invention of the electric (29) Without him, the world might still be a (30) place. However, the electric light was not his only invention. He also (31) the phonograph, the motion picture camera, and over 1,200 other things. About every two weeks he created something (32) Thomas A. Edison was (33) in Milan, Ohio, on February 11, 1847. Surprisingly, he attended school for only two months. His mother, a former teacher, (34) him a few things, but Thomas (35) mostly self-educated. His natural curiosity led him (36) start experimenting at a young (37) with electrical and mechanical things at home.
When he was 12 years old; he got his first job. He (38) a newsboy on a train that ran between Port Huron and Detroit. He set (39) a laboratory in a baggage car of the train so that he could continue his experiments in his spare (40) .

单选题 A. lightning B. light C. camera
【正确答案】 B
【答案解析】Electric light电灯，爱迪生发明了电灯，这是一个常识题目。
单选题 A. dark B. bright C. blind
【正确答案】 A
【答案解析】没有爱迪生发明的光，整个世界会是一片黑暗，因此选用dark。
单选题 A. bought B. found C. invented
【正确答案】 C
【答案解析】爱迪生也发明了留声机、电影放映机等1200多项发明。发明要使用invent。不能用bring(带来)、find(发现)。
单选题 A. new B. old C. red
【正确答案】 A
【答案解析】根据上下文，我们知道爱迪生在不断发明新东西，因此是应该选用new。
单选题 A. birth B. born C. existed
【正确答案】 B
【答案解析】出生于，使用固定的搭配：be born in。
单选题 A. teaching B. teaches C. taught
【正确答案】 C
【答案解析】此句子中，需要填入一个谓语动词，因为全文所叙述的事情发生在过去，因此应该使用teach的过去式taught。
单选题 A. was B. were C. are
【正确答案】 A
【答案解析】此句子的主语是Thomas，是第三人称单数，且事情发生在过去，因此应该使用was。Be self-educated意思是：“自学”。
单选题 A. in B. to C. on
【正确答案】 B
【答案解析】Lead sb. to是固定的搭配，意思是“引导；指引”某人做某事。
单选题 A. year B. age C. person
【正确答案】 B
【答案解析】at the age (of)/at a age是固定搭配，意思是“在……岁时”，此处，at a young age意思是“在年轻时”。
单选题 A. became B. becomes C. changed
【正确答案】 A
【答案解析】做什么工作，成为一个什么样的人，应该使用become，因为是过去，因此，这里应该选用became。
单选题 A. down B. out C. up
【正确答案】 C
【答案解析】Set up是固定同组，意思是：“建立，成立。”在一节行李车上建立了他的一个实验室。
单选题 A. time B. tire C. parts
【正确答案】 A
【答案解析】In one's spare time是固定的搭配，意思是：“在某人的空闲时间里。”